I have an existing pervious concrete parking lot project that the client is asking to replace with conventional asphalt. I need to utilize the stone base (ASTM #4) for storm water management. I am looking for some ideas as to if a choker course is needed for the asphalt and/or paving equipment in order to provide sufficient stability. NAPA makes reference that the choker course is optional (for pervious asphalt installations). Would this also hold true for conventional asphalt?
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